My old power supply is dead...I bought new one, connected everything...and when I started my computer, it all looked fine.
Windows started working, no problem and then, computer just turn off after about 30 sec. When I started it again, it worked for about 30 sec. and again it turned off.
When I took another power supply, connected it, turned computer on, and my pc monitor was totaly blank, nothing to see and pc case was running nowmally.
Can you please help me solve this, I know that I probably haven't explained it well, so if you need any more questions feel free to ask, I will try to answer if I can.
Thanks in advance for your help and your time.